Anelosimus biglebowski | |
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Scientific classification | |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Subphylum: | Chelicerata |
Class: | Arachnida |
Order: | Araneae |
Infraorder: | Araneomorphae |
Family: | Theridiidae |
Genus: | Anelosimus |
Species: | A. biglebowski |
Binomial name | |
Anelosimus biglebowski I. Agnarsson, 2006 | |
Anelosimus biglebowski is a species of spider in the family Theridiidae. All specimens known have been found in the Udzungwa Scarp Forest Reserve, [1] Mufindi District, Tanzania. It is named for the 1998 film The Big Lebowski . [2]
Anelosimus biglebowski ranges in total length from 1.80–2.10mm in males and 1.85–2.15mm in females. Coloration of the abdomen is variable in both sexes. [2]
The only known specimens have been collected from mid-elevation rainforest in the Udzungwa Scarp Forest Reserve, most commonly from an elevation of 1650–1730m. There may be a sex ratio of 2.5 females to 1 male. Habitat range is similar to Anelosimus dude , which is also close genetically. [2]
Nectophrynoides wendyae, also known as the Uzungwe Scarp tree toad or Wendy's forest toad, is a terrestrial toad in the family Bufonidae. It is endemic to Tanzania and is only known from a single valley in the Udzungwa Mountains. The specific name wendyae honours Wendy Clarke, the describer's wife.
Afrixalus uluguruensis is a species of frog in the family Hyperoliidae. Its common name is Uluguru banana frog. It is endemic to the Eastern Arc Mountains of Tanzania and known from the Kipengere Range, Mahenge, Udzungwa Scarp, Rubeho, North Uluguru, Nguru, Ukaguru, and Nguu Mountains.
Hyperolius kihangensis, also known as the Kihanga reed frog or volcano reed frog, is a species of frogs in the family Hyperoliidae. It is endemic to the Udzungwa Mountains in south-central Tanzania.
Hyperolius minutissimus is a species of frog in the family Hyperoliidae. Its common names are tiny reed frog and dwarf reed frog. It is endemic to Tanzania and known from the Udzungwa Mountains and from near Njombe in the Southern Highlands.
Anelosimus is a cosmopolitan genus of cobweb spiders (Theridiidae), currently containing 74 species. Anelosimus is a key group in the study of sociality and its evolution in spiders. It contains species spanning the spectrum from solitary to highly social (quasisocial), with eight quasisocial species, far more than any other spider genus. Among these is the South American social species Anelosimus eximius, among the best studied social spider species.
A social spider is a spider species whose individuals form relatively long-lasting aggregations. Whereas most spiders are solitary and even aggressive toward other members of their own species, some hundreds of species in several families show a tendency to live in groups, often referred to as colonies.
Anelosimus dude is a species of spider in the family Theridiidae. It is native to Tanzania, having only been found in the Udzungwa Scarp Forest Reserve and Mazumbai Forest Reserve. It is closely related to Anelosimus biglebowski. The name A. dude derives from "The Dude", a character in the 1998 film The Big Lebowski.
Anelosimus monskenyensis is a small species of spider in the family Theridiidae. It has only been found on Mount Kenya, the location from which its name originates. Males range in size from 1.80 to 1.90 millimetres, while females range from 1.90 to 2.55 millimetres. Specimens were shades of brown and white, although color variation is not known. They may kleptoparasitically inhabit the webs of agelenid spiders, although this behavior is not found in other Anelosimus species. Agnarsson and Zhang find it more probable that A. monskenyensis is a social or semi-social spider.
Anelosimus sulawesi is a small species of spiders in the family Theridiidae. It is known only from Dumoga Bone National Park, Sulawesi, Indonesia. The name derives from the location it was discovered. The holotype male is 2.00 millimetres (0.079 in) total length, while a female of the same species was measured to be 2.05 millimetres (0.081 in). The coloration is brown with some white on the dorsal folium, similar to other species in Anelosimus.
Anelosimus kohi is a species of spider in the family Theridiidae. It is found in Singapore and Malaysia. The species is named for Joseph K. H. Koh, an entomologist from Singapore who collected the holotype specimen.
Anelosimus nelsoni is a species of spider in the family Theridiidae. It is only known from iSimangaliso Wetland Park, KwaZulu-Natal, South Africa. It is named for Nelson Mandela. The male holotype specimen is 2.08 millimetres (0.082 in) in length, and the female paratype is 2.60 millimetres (0.102 in) in length. Both the holotype and paratype were found on Fanies Island, 5 km south of Cape Vidal. Both were collected from bushes or trees in an open forest patch.
Anelosimus agnar is a species of spider in the family Theridiidae. The holotype and paratype specimens were collected in Teluk Mahkota, Johor, Malaysia. Both specimens are female; this species currently lack information on males. The spider is named for Agnar Ingólfsson, the father of the discoverer, Ingi Agnarsson. Females can be identified as members of this species by unusually long and flimsy copulatory ducts. Females range in size from 2.05 to 2.40 millimetres. Both the holotype and paratype were collected from small webs at the tips of branches, from a forested area next to a beach.
Anelosimus linda is a species of spider in the family Theridiidae. The holotype and paratype specimens were collected in Cameron Highlands, Pahang, Malaysia. Both specimens are female; this species currently lack information on males. The spider is named for Linda Wendel, the mother of the discoverer, Ingi Agnarsson. Females are approximately 1.90 millimetres (0.075 in). A. linda lives in mid-elevation forest; both the holotype and paratype were collected at 1550m elevation.
Anelosimus oritoyacu is a species of tangle-web spider found in Ecuador and Mexico at altitudes from 1,800 to 2,000 metres. It is subsocial, although it has some features which distinguish it from other social or subsocial spiders in the genus. It has long-lived nest sites, unlike the social spider Anelosimus eximius which has more transitory nest sites, and its webs do not have aerial threads found in other social and sub-social species. It has a female-biased sex ratio, which is indicative of social behavior, although its sex ratio is smaller than other social species. It was first identified as distinct from Anelosimus studiosus in 2006 by Ingi Agnarsson. It is named for Oritoyacu, Ecuador, where the type specimen was collected.
Anelosimus terraincognita is a species of spider discovered in the collection of the Rijksmuseum van Natuurlijke Historie, with no associated information as to its collector or location of discovery. Males have a corkscrew-shaped embolus, which is a characteristic unique to Australasian species within the genus Anelosimus. It is known only from the holotype specimen, which has a total length of 2.2 millimetres (0.087 in). It is named for the cartographic Latin phrase terra incognita, meaning unknown land.
Anelosimus eidur is a species of tangle-web spider found in Papua New Guinea. Its habitat is high elevation scrub forest, in Southern Highlands Province and Enga Province. It has a total length of 2.75 to 4 millimetres, with the females being larger than the males. It can be identified by its unique genitalia, particularly the spiraling embolus in the males. The web structure is similar to social and sub-social species, leading to its tentative identification as subsocial. The species is named Eiður Francis, the son of Ingi Agnarsson who first identified the species in 2012.
Anelosimus luckyi is a species of spider found in Papua New Guinea. It is known only from the holotype specimen, found by Andrea Lucky in 2009 and after whom the species is named. It was discovered in Western Province at an elevation of 1,587 metres (5,207 ft). It has a distinctive embolus, which differentiates it from other species. The sociality of the species is not known.
Anelosimus bali is a species of spider found in Bali, Indonesia, after which the species is named. It is a coastal species, found in small-leaved mangrove trees along the beach. The holotype is female and 2.9 millimetres (0.11 in) long. No male specimens have been identified, and the social structure of the species is not known. It was first identified in 2012 by Ingi Agnarsson.
Anelosimus pratchetti is a species of tangle-web spider found in New South Wales, Australia. Initial field observations indicate it is a subsocial spider. It lives in low elevation environments, including beachfront mangrove forests. It was identified by Ingi Agnarsson in 2012, who named the species after Terry Pratchett, whom Agnarsson described as "a comic genius."
Anelosimus buffoni is a species of tangle-web spiders in the Madagascar group of the genus Anelosimus. It is known only from Périnet Special Reserve, Toamasina Province, Madagascar. Adults of the species have a total length of 4.1mm, and is physically similar to several other Madagascar group spiders, particularly A. andasibe and A. wallacei. It is primarily diagnosed using genetics. The species is named for Georges-Louis Leclerc, Comte de Buffon.